Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH] [22/31] memcg: add accessor to mem_cgroup.css | Date | Tue, 8 Dec 2009 22:16:38 +0100 (CET) |
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From: Wu Fengguang <fengguang.wu@intel.com>
So that an outside user can free the reference count grabbed by try_get_mem_cgroup_from_page().
CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> CC: Hugh Dickins <hugh.dickins@tiscali.co.uk> CC: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> CC: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
--- include/linux/memcontrol.h | 7 +++++++ mm/memcontrol.c | 5 +++++ 2 files changed, 12 insertions(+)
Index: linux/include/linux/memcontrol.h =================================================================== --- linux.orig/include/linux/memcontrol.h +++ linux/include/linux/memcontrol.h @@ -81,6 +81,8 @@ int mm_match_cgroup(const struct mm_stru return cgroup == mem; } +extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem); + extern int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); extern void mem_cgroup_end_migration(struct mem_cgroup *mem, @@ -206,6 +208,11 @@ static inline int task_in_mem_cgroup(str return 1; } +static inline struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) +{ + return NULL; +} + static inline int mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) { Index: linux/mm/memcontrol.c =================================================================== --- linux.orig/mm/memcontrol.c +++ linux/mm/memcontrol.c @@ -282,6 +282,11 @@ mem_cgroup_zoneinfo(struct mem_cgroup *m return &mem->info.nodeinfo[nid]->zoneinfo[zid]; } +struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *mem) +{ + return &mem->css; +} + static struct mem_cgroup_per_zone * page_cgroup_zoneinfo(struct page_cgroup *pc) {
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